Up-converting ALD/MLD thin films with Yb3+, Er3+ in amorphous organic framework



: Minnea Tuomisto, Zivile Giedraityte, Lukas Mai, Anjana Devi, Vitalii Boiko, Karina Grzeszkiewicz, Dariusz Hreniak, Maarit Karppinen, Mika Lastusaari

Publisher: ELSEVIER SCIENCE BV

: 2019

: Journal of Luminescence

: JOURNAL OF LUMINESCENCE

: J LUMIN

: 213

: 310

: 315

: 6

: 0022-2313

DOI: https://doi.org/10.1016/j.jlumin.2019.05.028


Near-infrared to green and red up-conversion is reported for a new type of hybrid (Yb,Er)-IR-806 films prepared using the atomic/molecular layer deposition (ALD/MLD) thin-film fabrication technology. These amorphous films can be realized in controllable nanothicknesses and they show an exceptionally wide absorption band in the near-infrared region. The films exhibit a highly local up-conversion excitation process, which suggests strong potential for use as e.g. temperature sensors with Angstrom scale surface resolution.



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